Just buy a quality Radar/Lidar/Laser detector like the Escort 8500 like what I bought. Easliy it has paid for itself alteast 12 times in the past 2 1/2 years. And for all of you busted on him for speeding, yes on non-highways doing 70 in a 45 is terrible especially in a vehicle that isn't in good shape for doing that kinda thing. However, on an uncrowded interstate like I-16 that goes to Svannah like he was going on, that highway is never crowded and is a long boring straight line with nothing but trees and farms on the side fo the road. The speed limits are posted low not really for safety or MPG but to taunt you into goin faster and then they can pull you over and give u a ticket and get some money and see if they can get you for anything else retarded like window tint or suspension height or whatever else they can get away with. I got pulled over recently for pulling out of my buddy's front yard where I was parked into a residential street that was not busy and he said it was because I drove down a curb which in the state of GA is illegal. Traffic laws in this state are the most BS of any state. 80 MPH isn't dangerous we all have just been conditioned to think that way.